2014年包头市高中毕业年级学业水平测试与评估(一)
英语
注意事项:
1.本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。答卷前，考生务必将自己的姓名、考生号、座位号、试卷类型(A或B)涂写在答题卡上。本试卷满分150分，考试时间120分钟。
2.回答第Ⅰ卷时，选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑。如需改动，用橡皮擦干净后，再选涂其他答案标号。写在本试卷上无效。
3.回答第Ⅱ卷时，将答案写在答题卡上，写在本试卷上无效。
4．考试结束后，将本试卷和答题卡一并交回。
第Ⅰ卷
第一部分听力(共两节，满分30分)
做题时，先将答案标在试卷上。录音内容结束后，你将有两分钟的时间将试卷上的答案转涂到答题卡上。
第一节(共5小题;每小题1. 5分，满分7. 5分)
听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C 三个选项中选出最佳答案，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。
1.Where does the conversation probably take place？
A. In the hospital.
B. At the hotel. G. At the airport.
2. Who likes the concert most？
A. The man
B. Helcn and Bill.
C. Helcn，Bill and the man.
3. How much time does the woman have to get ready?
A. About 10 minutes.
B. About 15 minutes.
C. About 30 minutes.
4. What do we know about the man?
A. He refused to lend the money.
B. He wanted to ask some questions first.
C. He is ready to help the woman.
5. What should Miss Lee do according to the man?
A. She should prove herself to others first.
B. She should talk to the director.
C. She should try to improve herself first.
第二节(共15小题;每小题1.5分，满分22.5分)
听下面5段对话或独自。每段对话或独白后有几个小题，从题中所给的A,B,C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话前，你将有时间阅读各个小题，每小题5秒钟;听完后，各小题给出5秒钟的作答时间。每段对话或独自读两遍。
听下面一段对话，回答第6至第8三个小题。现在你有15秒钟的时间阅读这只个小题。
6. Where does the woman live?
A. Nearby.
B. In the restaurant.
C. In the junior school.
7. What' s the woman’s job?
A. Waitress.
B. Teacher.
C. Headmaster.
8. What' s the man’s opinion of school children?
A. 1t' s quite easy to teach them.
B. They like to listen to the teachers.
C. They’re hard to control.
听下面一段对话，回答第9至第11三个小题。现在你有15秒钟的时间阅读这三个小题。
9. What has happened to the man?
A. His house was broken into.
B. He has locked himself out
C, He forgot to lack the front door.
10. When did he lock all the windows?
A. On Saturday.
B. On Sunday.
C. On Friday.
11.What is the woman most probably going to do?
A. Talk to others.
B. Look round.
C. Ask more questions.
听下面一段对话，回答第12至第14三个小题。现在你有15秒钟的时间阅读这三个小题。
12. Where does the conversation take place?
A. At a computer store.
B. At a garage.
C. At a hotel.
13 . What service will the woman get at last?
A. Having her computer fixed.
B.Renting a WIFI computer.
C. Getting a new computer
14. What can we learn from the conversation?
A. The woman uses computers a lot.
B. The woman works at the business center.
C. The rent is 5 yuan per hour.
听下面一段对话，回答第15至第17三个小题。现在你有15秒钟的时间阅读这三个小题。
15. Which is true about Robert and Betty?
A. They are classmates.
B. They work together.
C. They have never met each other.
16. Why are they here?
A. To find a teacher.
B. To learn art.
C. To find a room.
17. What can we learn about the man from the conversation
A. He is humorous and popular.
B. He is polite and happy.
C. He is friendly and helpful.
听下面一段独白，回答第18至第20三个小题。现在你有15秒钟的时间阅读这三个小题;
18. What is the best way to shop for holiday gifts?
A. To compare price and find out the most appropriate.
B. To spend as much money as you can.
C. To find out alI the cheapest things.
19. Which of the following is not recommended for gift-giving?
A. Making a list.
B. Thinking about the money you can spend.
C. Dividing the money equally.
20. What is the best gift of all?
A. A homemade gift.
B. The most expensive gift.
C. The most delicate gift.
第二部分阅读理解(共两节，满分40分)
第一节(共15小题;每小题2分，满分30分)
阅读下列短文，从每题所给的四个选项(A,B,C和D)中，选出最佳选项，并在答题卡上将该项涂黑。
A
Hello. I’m Jan from https://www.doczj.com/doc/6816364841.html,ke’s class. My class wants to work together to help the public. We think we have found a great way to do this. Last month we did a class project on the highways near our town. We learned about the Adopt-a-Highway Program. This program brings people together to pick up litter along the roads. We think it would be a great idea for all students in our school to join the program and adopt a highway.
Adopting a highway is not like adopting a pet. When a highway is adopted，only part of the highway is cared for by a group of people. The group agrees to work every week to keep its part of the highway clean.Each group gets its own sign that has the name of the group printed on it. The sign is put up at the side of the road. This sign lets drivers know who is keeping that area of the road clean.
The Adopt - a-Highway Program is a great way for people to help their environment look nicer. Also,the governwent does not have to send out as many road workers. This saves money. Finally, people may try harder to keep roads clean if they see people，especially teenagers like us，cleaning them up.
We will need helpers to care for our adopted highway. If you want to feel great and keep our roads clean，please come with your parents to the meeting next week. We will meet in Mrs. Lake’ room on Wednesday at 6:00 P.M. At the meeting, we will talk about which roads are the dirtiest as a result of people's unkind acts. Then we' Il try to pick an area to adopt and clean ap.
I look forward to seeing you at the meeting. Remember to keep our roads clean!
21.What is the Adopt-a-Highway Program about?
A. Giving names to the highways.
B. Drawing pictures of highways.
C. Picking up litter along the roads.
D. Putting up signs near the roads.
22. What should the students do first if they want to join the program?
A. Pick a spot to care for.
B. Call https://www.doczj.com/doc/6816364841.html,ke next week.
C. Write a letter to their parents.
D. Go to a meeting on Wednesday.
23.What is the purpose of this speech?
A. To encourage students to join the program.
B. To introduce the traffic system.
C. To show drivers how to drive safely.
D. To tell a story about adopting a pet.
24.Which of the following can be the best title for the passage?
A. Adopt – a-Pet
B. Adopt-a-Highway
C. Ways to Protect the Environment
D. V olunteers on Roads
B
Millions of sports lovers are sill thinking about one thing----the Winter Olympics in Sochi Russia. close to 2900 men and women competed in the 2014 Winter Games about a month ago.
The Olympics brought a lot of attention to Sochi，a city on the black Sea, which is a popular area for vacation travelers. The area is known for its mild winters，with warm to summer.
At least $50 billion was spent on the 2014 Winter Games, making it the costliest Olympics in history. Seven billion dollars was spent on the 2010 Winter Games in Vancouver, Canada. Olympic officials chose Sochi to host the 2014 games almost seven years ago, At that time，Russian President Vladimir Putin said the games would cost about $13 billion. Yet times his estimate. So where did all the money go?
Some observers say the high cost is partly the result of security measures. Brian Jenkins，a terrorism expert from the RAND Corporation，gave the following explanation. 'There were anywhere between 70 ,000 and 100 , 000 policemen and military troops deployed around the city.
The main threat came from separatist and Islamist groups from the North Caucasus, especially from Chechnya and Dagestan. One group claimed responsibility for two suicide bombings in Volgograd last December. The attacks killed more than 30 people. The city is only about 600 kilometers away from Sochi.
Bruce Hoffman is a terrorism export from Georgetown University in Washington DC. He says the increased security made Sochi a difficult target for terrorists.
It is thought that the terrorists' intention was to make life difficult for the Russians and to create some sort of incident that would take away the enjoyment.
The last Olympians from around the world on Russian soil was in 1980 .That was a year after Soviet troops invaded Afghanistan. More than sixty countries didn’t take part in the Moscow Summer Games to show their anger.
25. According to the passage, why did the Sochi Winter Olympics cost so much?
A. Because it was held at an area popular for vacation travelers.
B. Becauae the Russian government wanted to make it the best ever held.
C. Because security measures at Sochi were stricter than before.
D. Because the original plan was made 7 years before.
26. It can be known from the passage that Bruce Hoffman was
A. a terrorism expert from the USA
B.the writer who wrote this article
C. an athlete who competed in Sochi
D. a terrorism expert from RAND Corporation
27. Which of the following is false?
A. Sochi Olympics cost about 4 times as estimated.
B. Next winter Olympics will be held in Vancouver.
C. Many countries refused. to attend the 1980 Olympics.
D.Security is often a problem in international sport games.
28. The terrorists might have attacked Sochi Olympics because
A. they wanted to make trouble for the Russians
B.they thought Russia shouldn't spend so much on sport
C. they thought Putin was not a nice president
D. they were not interested in winter sports
C
As I grew older, my dad and 1 grew further apart. We always had totally different opinions. He thought that college was a waste of time, but for me it was important to finish college. He
wanted me to work my way to the top as he had done in his field，but I wanted a different life. There was a time when we did not talk with each other.
A few months ago, I heard that my 84-year-old dad was in poor health. When he called and asked whether I could move from Colorado bank to Tennessee to help him,I knew he was seriously ill. I am his only child and so it was time to meet my father's requirement.
Two weeks after moving back，we bought a boat and started fishing again. Fishing was one of the few things that we did while 1 was young and that we both enjoyed. It is strange but true that as we are fishing we are able to put things that have kept us apart for so many years behind us. We are able to talk about things that we have never talked about before. Fishing has heen healing the old wounds that have kept us apart.
It is not important how many fish we catch. It is about enjoying the relationship that we have not had for years. I' m 62 and he is 84. When we are on the lake fishing, it is like enjoying life. It is far better to find a way to put the unhappy past behind. I am so lucky to spend the happy time with my father in his last years.Now my heart is filled with love. A smile always graces my lips.
29. The author and his father became further apart because
A. they lived very far from each other
B. they seldom went see each other
C. they only communnicated by phone
D. they had different views on things
30. Why did the author came back to Tennessee?
A. Because his father invited him tg ga $shire.
B. Because he decided to live in a different city.
C. Because his father was ill and needed caring.
D. Because he regretted being rude to his father.
31.For the author, fishing with his old father
A. help cure his father’s disease
B. makes him realize the importance of relaxation
C. is a good way to get close to nature
D. provides a chance for them to communicate
32. Which of the following can be the title for the text?
A.Fishing Brings Us Together
B. Forgiving Is Difficult
C.Memories of Old Days
D. My Beloved Father
D
Prejudice is a preconceived opinion that is not based on fact or reason. Examples of prejudice in schools include believing that some students are particular type of people simply because of the way they dress or act, or believing that a certain group is good at sports simply because many peop1e in that group are goad at sports. Another example is believing that a boy is good at science because many boys are good at science.
I would like to cite more examples from the English literature. The best example of “prejudice” can be found in Jane Austen’s novels. Her novels in the history of English literature are popularly known as "novels of manners".Thus you can clearly understand that where manners and social behavior are concerned，"prejudice" is inevitable ! Austen' s famous novel Pride and Prejudice is the best example in this respect. When you read the novel, the very first line that would strike you is “it is a truth universally acknowledged, that a single man in possession of a
good fortune must be in want of a wife.”It is an example of 18th century English middle class prejudice that eventually looked upon women just as an object that would serve as the basic sign for a man to establish his manliness and his superior and well acquired financial status. This novel is chiefly about class division，social norms and the consequent human behavior. The characters Elizabeth and Darcy，in their journey of 1ife through the course of the novel, highlight their personal prejudices towards one another that arise from their different social strata(阶层).Darcy，a rich man , at first ,
fails to admire the beauty and intelligence of Elizabeth because of her low social status:"she is tolerable; but not handsome e nough to tempt me;”and Elizabeth，proud of her "first impressions"，failed to understand the well natured man under the proud and unfriendly Darcy.
33. What is "prejudice" defined in this passage?
A. Prejudice is a reasonable idea that is based o n one’s own experience.
B. Prejudice is a preference for one group of people or things over another.
C. Prejudice is a preconceived opinion before becoming aware of fact or reason.
D. Prejudice is an unreasonable dislike of a particular group of people or things.
34. The underlined word "inevitable" in the second paragraph probably_means_ .
A. unavoidable
B. reasonable
C. unbelievable
D. valuable
35.From the novel Pride and Prejudice，we can’t learn that.
A. where manners and social behavior are concerned "prejudice" is inevitable
B. "prejudice" was defined and compared with“p ride” in 18th century
C. it's about class division，social norms and the consequent human behavior
D. personal prejudices towards one another arise from different social strata
第二节(共5小题；每小题2分，共10分)
根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Everyone wants to perform well at school, Add these tips to your life and you should be on your way to being a top student !
36 I cannot stress how important it is to pay attention to what your teacher is teaching you. Take part in class discussions if you have something worth adding. Pay attention during class, especially during lectures.
Taking notes is important .You don’t need to write down every sin gle word your teacher says but write down what he or she writes on the board，or any special fact you think you might need for a test. _37 This away it will help you learn more effectively by actually thinking about what you are writing.
Don’t skip school .You will be missing out on stuff . However , you will have more work and you have missed lectures, Also, try not to be late for class. It' s most likely that your teacher won’t appreciate it and you will get yourself behind.
39 If you have an“I don’t care about school or this class" attitude, then teacher s will be less willing to help you with problems or offer you extra credit, The same goes for lazy attitude.Have a respectful attitude to the teacher and other students. Try not to laugh when other students make mistakes.
Always ask questions . 40 If you don’t understand，ask someone. Read your textbook and notes，and then if that fails ,seek help. Ask a teacher，friend，classmate, parent, etc. Get a tutor if you need one.
A. Be prepared.
B. Write in your own words.
C. Pay attention to everything the teacher says.
D. Staying organized will be helpful.
E. There is no shame in needing some help.
F. It is true that you could make up the work.
G, Keep a good attitude towards things.
第三部分英语知识运用(共两节，满分45分)
第一节完形填空(共20小题;每小题1.5分，满分30分)
阅读下面的短文，从短文后各题所给的四个选项（A、B、C和D)中，选出可以填入空白处的最佳选项并在答题卡上将该项涂黑。
Yesterday, I met a delightful woman at a work event. As we talked，she told me about her 41 in Manila，Philippines. She spoke about the 42 her culture values their elders，and she explained that children are 43 from the time of birth to respect and 44 people older than themselves.
It was 45 to hear that，so I enjoyed listening and learning . Here is her memory 46 .
I found so beautiful.
When she was growing up , her father had three jobs to 47 his family.She said her dad never 48 ,and though he worked very hard,he always had 49 for them.One day,her father was 50 at his full – time job .For several months ,he was mailed temporary disability checks he was recovering .
When her father was able to return to his full-time joh，he took all those disability 52 that were sent to him while he was recovering and handed them back to the 53 He told them that he had two good legs and arms，and did not need this money. He told them to give the money to people who could not work，to people who 54 needed it.
The woman telling the story was a little girl at that time. She had 55her father that very day when he went back to his company 56 all those unopened checks.“My father is my hero，”she 57 .Lowering her voice，she said she would never forget what he did，and what an 58 and influential mentor(导师)he was on how to live a life.
From my communication with her, it was 59 that her father's same sweet spirit had been 60 to this woman, and to her family, Hearing this story was so refreshing to my soul, 1 hope it is for you too.
41. A. study B. childhood C. friendship D. hobby
42. A. way B. pattern. C. memory D. skill
43. A. adopted B.brought C. attended https://www.doczj.com/doc/6816364841.html,cated
44. A. greet B. admire C. honor D .welcome
45. A.surprising B. refreshing C. convincing D.puzzling
46. A. that B. what C. it D. this
47. A. depend on B. watch over C . take in D. care for
48. A. explained B. apologized C. complained D. regretted
49. A. food B. clothing C. space D. time
50. A. defeated B. injured C. fired D. punished
51.A. while B. though C. because D.since
52. A. presents B.goods C. checks D. awards
53. A. company https://www.doczj.com/doc/6816364841.html,mittee C. comrnunity D. charity
54. A. frequently B. regularly C. actually D. normally
55. A. observed B.accompanied C. supported D. reminded
56. A. on B._about C. for D. with
57. A. remarked B. reported C. sighed D. announced
58. A. advanced B. effective C. inspiring D. honest
59. A. possible B. necessary C. strange D. obvious
60. A. given in B.passed down C. held on D. handed out
绝密★启用前
2014年包头市高中毕业年级学业水平测试与评估(一)
英语
第II卷
注意:将答案写在答题卡上。写在本试卷上无效。
第三部分英语知识运用(共两节，满分45分)
第二节(共10小题;每小题1.5分，满分15分)
阅读下面材料，在空白处填入适当的内容(不多于3个单词)或括号内单词的正确形式。Doctor:Have a seat please. So……?
Patient:I’m afraid that I am ill.
Doctor:I’m sorry to 61 that. Why do you think so ?
Patient :Because I feel tired all the time, even 62 I wake up in the morning. And I have no
63 .My wife cooks me delicious meals but I can only eat a little.
Doctor :Do you find it difficult to get to sleep，or do you wake up early?
Patient: Both，doctor. I never get to sleep 64 2 o’ clock and I always wake up at 5.
Doctor:Are you worried about something?
Patient:Well, yes. I’m worried about my work. I’ve just65 (take ) a new job. I earn a lot of money but it’s difficult work. I’m always afraid of 66 (make) mistakes.
Doctor :I see. Please take 67 your shoes and lie down on the bed.
Patient: Yes，doctor.
(The doctor examines the patient)
Doctor :Well, there’s68 wrong with you，I’m glad to say. You’re working too hard and worrying too much. Do you take any exercise?
Patient:No. I never have enough time for exercise. Can you give me some medicine?
Doctor:I can，but I’m not going to. You don’t need medicine. You need advice. Don’t work so hard. If you think your present job is too hard, find an 69 (easy) one. Anyway, it’s more important to be healthy than 70 .
第四部分写作(共两节，满分35分)
第一节短文改错(共10小题;每小题l分，满分10分)
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。短文中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏词符号()，并在此符号下面写出该加的词。
删除:把多余的词用(\)划掉。
修改:在错的词下面划一横线，并在该词的下面写出修改后的词。
注意:1.每处错误及其修改均仅限一词;
2.只允许修改10处，多者(从第11处起)不计。
There is nothing I like more than reading. I like different forms of literature-novel, short sto- ries and so on. I like to read whatever I have a bit of quiet time--like early in the morning，during lunch hour, and at night when I’m lying in the bed. I usually read in a small study next to his liv- ing room. It' s like a small library with good natural sunlig ht.I really don’t enjoy reading in coffee shops or public places. I need quiet space to read. Besidc books, I often skim through magazines and newspapers, and I am fond of do the puzzles. They are fun and interesting. I collect articles from newspapers for useful information or recipes. For me, reading was a spiritual experience that gives me great person satisfaction. Television and movies can’t do that. I can’t think about any better way to relax and forget the pressure of each day .
第二节书面表达(满分25分)
假如你是李华，是红星外国语学校的学生会主席，根据双方约定，你们打算今年夏天去英国Studio School进行四个星期的学习和旅游。请你写信给Studio School ,就下面事宜进行通告。
1.你们一行有30人，其中2位教师、18个男生,10位女生，希望他们安排home - stay家庭。
2.你们的计划为上午上课，下午到图书馆学习，晚上自由活动。周末安排旅游。
3.盼望对方尽早发出正式邀请，以便办理正式手续。
注意;1.可以适当增减细节，使其连贯完整。
2.字数在100左右，信的开头和结尾已经给出，不计入总词数。
参考词汇:办理手续:go through all the procedures
正式邀请函: formal invitation
Dear Sir,
I’m Li Hua, chairman of the Students' Union of Hongxing Foreign language School.
Best wishes!
Yours Sincerely，
Li Hua
2014年包头市高中毕业年级学业水平测试与评估(一)
英语参考答案
注意:评分时听力部分(1-20题)单独计分，其余部分总分乘以1.25，即为本次考试最终得分。
2018年河北省普通高等学校对口招生考试 英语 第一部分英语知识运用（共分三节，满分40分） 第一节语音知识：从A、B、C、D四个选项中找出其划线部分与所给单词划线部分读音相同的选项。（共5分, 每小题1分） 1. open A. lonely B. cost C. doctor D. shop 2. smile A. trip B. him C. hide D. rich 3. how A. low B. power C. tomorrow D. bowl 4. laugh A. sight B. cough C. eight D. night 5. nose A. groups B. gas C. house D. praise 第二节词汇与语法知识：从A、B、C、D四个选项中选出可以填入空白处地最佳选项。 （共25分, 每小题1分） 6. Jack _______ be a nurse, for he works in a bookstore. A. needn’t B. must C. can’t D. should 7. —I’m afraid I can’t return the storybook to you before Sunday. —_______. A. Don’t be afraid B. Be careful C. Not at all D. Take your time 8. We won’t go for a walk if it _______ tomorrow. A. rain B. rains C. will rain D. rained 9. Is he the student _______ brother works in a foreign company? A. who B. that C. whose D. of whom 10. You should do your work a bit _______next time. A. care B. more carefully C. more careful D. careful 11. It’s reported that a new hospital _______ next month. A. set up B. has been set up C. will be set up D. will set up 12. I’ll send you a massage _______ I arrive in Shijiazhuang. A. as soon as B. as far as C. as well as D. as much as 13. I have never been abroad, _______ he. A. neither has B. nor had C. so has D. so had 14. We would had dropped by if we _______ time. A. have had B. had had C. had D. have 15. Our city is becoming more and more beautiful. It’s no longer_______. A. what it used to be B. what it used to being C. what it was used to be D. what it was used to being 16. The Spring Festival is on _______first day of ______ year on the lunar calendar. A. /; a B. /; the C. the; / D. the; a 17. —How is the weather today? —It’s fine _______rather cold. A. with B. but C. or D. for
高三线上自我检测 物理试题 一、单项选择题：本题共8小题，每小题3分，共24分。在每小题给出的四个选项中，只 有一项是符合题目要求的。 1．关于固体、液体、气体和物态变化，下列说法中正确的是 A ．晶体一定具有各向异性的特征 B ．液体表面张力是液体内部分子间的相互作用 C ．0℃的铁和0℃的铜，它们的分子平均速率相同 D ．一定质量的某种理想气体状态改变时，内能不一定改变 2．下列说法正确的是 A ．阴极射线的本质是高频电磁波 B ．玻尔提出的原子模型，否定了卢瑟福的原子核式结构学说 C ．贝克勒尔发现了天然放射现象，揭示了原子核内部有复杂结构 D ．23994Pu 变成20782Pb ，经历了4次β衰变和6次α衰变 3．如图所示，a 、b 、c 、d 为椭圆的四个顶点，一带电量为＋Q 的点电荷处在椭圆的一个焦点上，另有一带负电的点电荷仅在与+Q 之间的库仑力的作用下沿椭圆运动，则下列说法中正确的是 A ．负电荷在a 、c 两点的电势能相等 B ．负电荷在a 、c 两点所受的电场力相同 C ．负电荷在b 点的速度小于在d 点速度 D ．负电荷在b 点的电势能大于在d 点的电势能 4．如图所示，完全相同的两个光滑小球A 、B 放在一置 于水平桌面上的圆柱形容器中，两球的质量均为m ，两球心的连线与竖直方向成 30角，整个装置处于静止状态。则下列说法中正确的是 A ．A 对 B 的压力为mg 332B ．容器底对B 的支持力为mg C ．容器壁对B 的支持力为mg 6 3D ．容器壁对A 的支持力为 mg 6 3
5．如图所示，图中曲线为两段完全相同的六分之一圆弧连接而成的金属线框（金属线框处于纸 面内），每段圆弧的长度均为L ，固定于垂直纸面向外、大小为B 的匀强磁场中。若给金属线框通以由A 到C 、大小为I 的恒定电流，则金属线框所受安培力的大小和方向为 A ．IL B ，垂直于A C 向左 B ．2ILB ，垂直于A C 向右 C ． 6ILB π，垂直于AC 向左D ．3ILB π ，垂直于AC 向左6．如图所示，理想变压器原、副线圈的匝数之比为10:1，原线圈接有正弦交流电源u ＝2202sin314t (V)，副线圈接电阻R ，同时接有理想交流电压表和理想交流电流表。则下列说法中正确的是 A ．电压表读数为V B ．若仅将原线圈的匝数减小到原来的一半，则电流表的读数会增加到原来的2倍 C ．若仅将R 的阻值增加到原来的2倍，则变压器输入功率增加到原来的4倍 D ．若R 的阻值和副线圈的匝数同时增加到原来的2倍，则变压器输入功率不变7．2024年我国或将成为全球唯一拥有空间站的国家。若我国空间站离地面的高度是同步卫 星离地面高度的n 1，同步卫星离地面的高度为地球半径的6倍。已知地球的半径为R ，地球表面的重力加速度为g ，则空间站绕地球做圆周运动的周期的表达式为 A ．2 B ．2 C ．2 D ．28．B 超检测仪可以通过探头发送和接收超声波信号，经过电子电路和计算机的处理形成图 像。下图为仪器检测到发送和接收的超声波图像，其中实线为沿x 轴正方向发送的超声波，虚线为一段时间后遇到人体组织沿x 轴负方向返回的超声波。已知超声波在人体内传播速度为1200m/s ，则下列说法中正确的是A ．根据题意可知此超声波的频率为1.2×105Hz
第 1 页 共 6 页 包头市第三十三中学2013-2014学年度第一学期 期末考试高三年级化学科目试卷 7. NH 4HCO 3是一种离子化合物，下列关于该物质的叙述正确的是（ ） A 、所含四种元素的原子半径由小到大的顺序为：H ＜C ＜N ＜O B 、同周期的三种元素的电负性由大到小的顺序为：N ＞O ＞C C 、其与足量氢氧化钠溶液共热的离子方程式为：NH 4++OHˉ NH 3↑+H 2O D 、除去NaCl 固体中混有的NH 4HCO 3固体可以采用加热的方法 8．N A 表示阿伏加德罗常数，下列说法正确的是（ ） A 、标况下，2.24L 乙醇含有0.2N A 个碳原子 B 、CO 2通过Na 2O 2使其增重a g 时，反应中转移的电子数为56 A a N C 、3.0gNO 与1.12LO 2(标况下)反应后，气体分子数可能为0.06 N A D 、200mL2mol/L 的NaOH 溶液中，含有0.4N A 个共价键 9．如图是元素周期表前六周期的一部分，关于元素X 、Y 、Z 的叙述正确的是 ①X 的最简单气态氢化物与Y 最高价氧化物对应的水化物能发生反应生成盐 ②等物质的量浓度的X 、Y 、Z 的气态氢化物的水溶液的pH ：X ＞Y ＞Z ③Z 的单质常温下的是液体，一定条件下可与铁粉反应 ④Z 的原子序数比Y 大19 ⑤Z 所在的周期中含有32种元素 A ．只有③ B ．只有①④ C ．只有①②③④ D ．①②③④⑤ 10．一定条件下，在体积为2L 的密闭容器中，3molX 和3mol Y 发生反应：3X （g ）+Y （g ） 2Z （g ），经60s 达到平衡，生成0．4mol Z 。下列说法正确的是（ ） A ．60s 内反应速率为v （X ）=0．05 mol ／（L·s ），X 的转化率为80％ B ．其它条件不变，将容器体积变为4L ，Z 的平衡浓度变为原来的12 C ．其它条件不变，若升高温度，X 的体积分数增大，则该反应的△H>0 D ．其它条件不变，若初始投入2mol X 和2mol Y ，则物质Y 的转化率减小 11．下列方程式正确的是 （ ） A ．表示甲醇燃烧热的热化学方程式：2CH 3OH(l)+3O 2(g)=2CO 2(g)+4H 2O(g);△H =-725KJ/mol B ．硫化钠溶液显碱性的原因：S 2-+2H 2O H 2S+2OH -
注意事项： 1.本试题卷分选择题和非选择题两部分，总分110分，考试时间70分钟。其中第13～14题为 选考题，其他题为必答题。 2．答题前，考生务必将自己的姓名、准考证号填写在答题卡指定的位置上。 一、选择题:本题共8小题，每小题6分,共48分。在每小题给出的四个选项中，第1～5题只有一项符合题目要求，第6～8题有多项符合题目要求。全部选对的得6分，选对但不全的得3分，有选错的得0分。 1. 下列说法正确的是 A. 气体的温度升高，每个气体分子的运动速率都会增大 B. 从微观角度讲，气体压强只与气体分子的密集程度有关 C. 当分子力表现为引力时，分子势能随分子间距离的增大而增大 D. 若一定质量的气体膨胀对外做功50 J，则内能一定减少50 J 2. 如图所示，物块M左侧贴着一竖直墙面，物块N置于物块M上．现将竖直向上的恒力F作用在 M上，M、N一起向上做匀减速直线运动．M、N之间相对静止，物块N的质量为m，重力加速度为g，不计空气阻力．下列说法正确的是 A. 物体N可能只受到一个力 B. 物块M与墙面之间一定没有摩擦力 C. 物块N对物块M的作用力大小可能为mg D. 物块M与N之间可能没有摩擦力，但一定有弹力 3. 如图所示，足够长的光滑平板AP与BP用铰链连接，平板AP与水平面成53°角固定不动，平板 BP可绕水平轴在竖直面内自由转动，质量为m的均匀圆柱体O放在两板间sin53°=，cos53°=，重力加速度为g。在使BP板由水平位置缓慢转动到竖直位置的过程中，下列说法正确的是 4 5mg A. 平板BP受到的最小压力为 B. 平板BP受到的最大压力为mg C. 平板AP受到的最小压力为3 5 mg D. 平板AP受到的最大压力为mg
内蒙古包头一中2014届高三暑假补课检测试卷（解析版） 一、单项选择题（本大题共25题，每题2分，共50分） 1.罗荣渠在《现代化新论》一书中说：“在此以后，外国渗透的方式从外贸领域扩大到投资、生产、销售、金融各个领域，直接改变了原有的‘小农—手工业生产方式’，使中国在经济上和财政上都日益陷入对资本主义世界经济体系的依附地位。”要研究这一状况产生的原因，应首选下列哪一不平等条约 A.《南京条约》 B.《北京条约》 C.《马关条约》 D.《辛丑条约》 2.经济朱维铮在《重读中国近代史》中有这样的叙述：“（缔造者们）言辞的崇高与行为的凶暴，平等的许诺与特权的森严，恰成对比，越来越使渴望解脱重重压迫的贫民失望。”这一观点最有可能用来描述近代中国的 A．鸦片战争 B．太平天国运动 C．义和团运动 D．辛亥革命 3.下表根据《中国工人阶级历史状况》一书数据编制，透过产业工人人数的变化可以窥见
A．清末洋务运动的足迹 B．十月革命的推动 C．民国初年实业推进的步伐 D．五四运动的影响 4．“故自昔惟意大利亚足以纲纪西洋，自意大里（意大利）裂为数国，教虽存而富强不竞，于是佛郎机（法兰西）英吉利代兴。而英吉利尤炽，不务行教而专行贾，且佐行贾以行兵，兵贾相资，遂雄岛夷。”这段材料表明魏源的观点是 A．重视商业 B．重视宗教的作用C．重视军事实力 D．重视向西方学习技术 5.曾国藩立稿、李鸿章会衔上疏清廷“今中国欲仿效其意而精通其法，当此风气既开，似宜亟选聪颖子弟，携往外国肄业，实力讲求，以仰副我皇上徐图自强之至意。”为此洋务派举办 A．引进技术，兴办工厂 B．派遣留学生 C．创建海军 D．兴办学堂
2017-2018学年度上学期高三年级英语学科 命题：高三英语组审题：高三英语组练习时间：100分钟 第一部分阅读理解（共两节，满分40分） 第一节（共15小题;每小题2分，满分30分） 阅读下列短文，从每题所给的四个选项（A 、B 、C 和D ）中出最佳选项，并在题卡上将该项涂黑。 A It’s 5:00 in the morning when the alarm rings in my ears. I rol l out of bed and walk blindly through the dark into the bathroom. I turn on the light and put on my glasses. The house is still as I walk downstairs while my husband and three kids sleep peacefully. Usually I go for a long run, but today I choose my favorite exercise DVD insanity. Sweat pours down my face and into my eyes. My heart races as I face my body to finish each movement. As I near the end of the exercise, I feel extremely tired, but a smile is of my face. It’s not a smile because the DVD is over, but a smile of success from pushing my body to its extreme limit. Some people enjoy shopping, smoking, food, work, or even chocolate. But I need exercise to get through each day. Some shake heads when they see me run through the town. Others get hurt when I refuse to try just one bite o f their grandmother’s chocolate cake. They raise their eyebrows, surprised by my “no thank you,” or by my choice to have a salad. Over the years, I have learned it’s okay to just say “no.” I shouldn’t feel sorry for refusing food that I don’t want to eat. So what drives me to roll out of bed at 5:00 a.m.? What gives me the reason to just say no to ice cream? Commitment. A commitment to change my life with a way that reduces daily anxiety, increases self –confidence and energy, extends life and above all improve my body shape. This is the point where a smile appears on my face as I look at myself in the mirror or try on my favorite pair of jeans that now fit just right. It’s through commitment and sweat that I can make a difference within myself inside and out. 1.Why is there a smile on the author’s face in the morning? A. Because she sees her family sleeping peacefully. B. Because she finishes her favorite exercise C. Because she enjoys the interesting DVD D. Because she feels a sense of achievement 2. What does the underlined word “commitment” in the last paragraph mean? A. Good health B. Firm belief C.A strong power D.A regular habit 3. What can we learn about the author from the text? A. She acts in a strange way B. She wants to look different from others C. She aims to develop a good body shape
海淀区高三年级第二学期阶段性测试 物 理 2020春 本试卷共8页，100分。考试时长90分钟。考生务必将答案答在答题卡上，在试卷上作答无效。考试结束后，将本试卷和答题卡一并交回。 第一部分 本部分共14题，每题3分，共42分。在每题列出的四个选项中，选出最符合题目要求 的一项。 1．下列说法中正确的是 A ．β衰变现象说明电子是原子核的组成部分 B ．放射性元素的半衰期与原子所处的化学状态及外部条件有关 C ．在核反应方程42He +147N →17 8O +X 中，X 表示的是中子 D ．氢原子由激发态向基态跃迁时，向外辐射光子，原子能量减少 2．下列说法中正确的是 A ．1g 水和1g 氧气所含分子个数相同 B ．液体分子的无规则运动称为布朗运动 C ．分子间的引力与斥力的大小都随分子间距离的增大而减小 D ．在物体温度不断升高的过程中，物体内每个分子热运动的动能都一定在增大 3．一定质量的理想气体，在温度保持不变的条件下，若气体体积减小，则 A ．气体的内能增大 B ．外界一定对气体做正功 C ．气体的压强可能不变 D ．气体压强与体积的乘积变小 4．如图1所示，两束单色光a 和b 从水中射向水面的O 点，它们进入空气后的光合成一束光c 。根据这一现象可知，下列说法中正确的是 A ．水对a 光的折射率较大 B ．从水射向空气时，a 光全反射的临界角小于b 光的临界角 C ．两束光在从水进入空气时频率均保持不变 D ．若a 光照射到某金属上能发生光电效应，则b 光照射该金属上不一定能发生光电效应 5．分别在地球表面和月球表面对同一物体施加瞬时冲量，使物体以相同初速度竖直上抛（其上升的最大高度远小于月球的半径）。已知月球表面的重力加速度可认为是地球表面重力加速度的1/6，不计空气阻力及地球和月球自转的影响，下列说法中正确的是 A ．物体在月球表面上升的最大高度为在地球表面上的6倍 B ．物体在月球表面上升至最高点的时间是在地球表面上的36倍 C ．从最高点落回到抛出点的过程中，地球引力与月球引力对物体做功的功率相同 D ．从抛出点至落回到抛出点的过程中，地球引力与月球引力对物体的冲量均为零 图1
化学试卷 第1页（共18页） 化学试卷 第2页（共18页） 绝密★启用前 内蒙古包头市2014年初中升学考试 化 学 (试卷40分,考试时间60分钟) 可能用到的相对原子质量：H 1— C 12— O 16— Na 23— Mg 24— Al 27— S 32— Cl 35.5— Ca 40— Fe 56— Cu 64— Ag 108— Ba 137— 一、选择题(本题共8小题,每小题2分,共16分。第1～5题为单项选择题。第6～8题 为多项选择题,每小题有二个或三个选项符合题意。全部选对得2分,选对但不全得1分) 1.下列变化属于化学变化的是 ( ) A .干冰升华 B .葡萄酿酒 C .瓷碗破碎 D .自行车胎爆炸 2.下列按氧化物、化合物、混合物顺序排列的是 ( ) A .蒸馏水、碘酒、空气 B .二氧化锰、盐酸、小苏打 C .冰水混合物、熟石灰、医用酒精 D .水银、氧化铜、纯碱 3.下列说法正确的是 ( ) A .分子是保持物质性质的最小粒子 B .中和反应生成盐和水,有盐和水生成的反应一定是中和反应 C .任何不饱和溶液降低温度后,一定会变为饱和溶液 D .在化学反应A B C D a b c d ++中(a 、b 、c 、d 为化学计量数),若A 和B 的质量 都为m 克,充分反应后,生成C 和D 的质量总和不一定是2m 克 4.下列有关物质的检验、除杂、鉴别、分离所用试剂或方法正确的是 ( 5.下列各组溶液,不加其他试剂就能鉴别的是 ( ) A .24K SO 、2BaCl 、23Na CO 、HCl B .3HNO 、23Na CO 、32Ca(NO )、HCl C .2CuCl 、24K SO 、3NaNO 、NaOH D .3AgNO 、KCl 、NaCl 、3HNO 6.下列图象中有关量的变化与对应叙述不相符的是 天平平衡。若将下列各组的两种物质分别加入左右两烧杯中,充分反应后,天平仍平衡的是 ( ) A .铜8克,氧化铜8克 B .氯化钡溶液10克,氢氧化镁5克 C .氧化铜4克,碳酸镁8.4克 D .铁5克,铝5克 8.某2CaCl 样品中,可能含有3KNO 、2CuCl 、2MgCl 、NaCl 和23Na CO 中的某些物质, 取该样品11.1克溶于适量水中,得到澄清的无色溶液,然后向其中加入足量3AgNO 溶液,得到28.7克白色沉淀,则该样品组成的下列推断中正确的是 ( ) A .只有2MgCl ,没有NaCl B .肯定没有2CuCl 和23Na CO 毕业学校_____________ 姓名________________ 考生号________________ ________________ ___________ -------------在 --------------------此-------------------- 卷-------------------- 上-------------------- 答-------------------- 题-------------------- 无-------------------- 效----------------
高三第四轮复习质量检测 英语试题 注意事项： 1. 答卷前，考生务必将自己的姓名、考生号等填写在答题卡和试卷指定位置上。 2. 回答选择题时，选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑。如需改动，用橡皮擦干净后，再选涂其他答案标号。回答非选择题时，将答案写在答题卡上。写在本试卷上无效。 3. 考试结束后，将本试卷和答题卡一并交回。 第一部分阅读(共两节，满分50分) 第一节(共15小题；每小题2.5分，满分37.5分) 阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。 A While gardens can be a great place for pets to explore and play, some seemingly harmless plants and gardening products can be poisonous for animals or pets. Here are the garden products to avoid: Cocoa mulch Some gardeners like to use cocoa shell mulch in their gardens but, just like chocolate, cocoa shell mulch contains theobromine (可可碱), which is poisonous to dogs. This means that cocoa shell mulch can be potentially deadly if consumed in large quantities. If you own a dog I’d strongly advise that you avoid using Cocoa mulch in your garden. Compost Despite being an eco-friendly garden feature, compost can be highly dangerous for animal. As organic matter decomposes, it releases mycotoxins (霉菌素), which are poisonous to wildlife. Consumption of mycotoxins can cause panting, vomiting (呕吐), seizures and even death in dogs. If you do use compost in your garden, make sure it is securely fenced off so that your pet cannot access it. Weed killer The chemicals contained in weed killers can be irritants to animals and, in some cases，even poisonous. Some weed killers contain harmful substances, such as borax and arsenic, which can potentially be fatal to pets. If you are unsure whether a weed killer is safe to use in a garden that your pet uses, you should always seek the manufacturer’s advice first, or ask a vet (兽医).
生物试卷 第1页（共12页） 生物试卷 第2页（共4页） 绝密★启用前 内蒙古包头市2014年初中升学考试 生 物 本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。满分50分,考试时间30分钟。 第Ⅰ卷(选择题 共24分) 一、选择题(本题包括12小题,每小题2分,共24分。每小题只有一个选项符合题意) 1.下列有关细胞知识的叙述错误的是 ( ) A .绿色植物的每个细胞都有细胞壁、叶绿体和线粒体 B .洋葱根尖细胞分裂时,染色体先复制加倍后,再均等进入两个新细胞中去 C .细胞核控制着生物的发育,是由于核中存在脱氧核糖核酸的缘故 D .挤压水果得到的果汁来自细胞中液泡 2.下列关于细菌和真菌的说法正确的是 ( ) A .只要有细菌和真菌存在,人和其他动物就会生病 B .某些真菌产生的抗生素可以杀死或抑制一些细菌 C .细菌和真菌都有染色体 D .霉菌通过孢子进行有性生殖 3.人的体细胞中有23对染色体,则血液中的红细胞、脊髓中的神经元、睾丸中的精子中染色体数目分别是 ( ) A.46条、46条、23条 B.0条、46条、23条 C.46条、23条、23条 D.23条、46条、46条 4.下列有关生物实验的叙述不正确的是 ( ) A .在显微镜视野中观察到某细胞的细胞质沿顺时针方向流动,则该细胞的细胞质实际上沿逆时针方向流动 B .抽样检测需随机取样 C .进行探究实验时,需要控制变量并设置对照 D .测量实验数据时,为减小误差通常设置重复组,实验数据应取其平均值 5.比较人与不同生物的细胞色素C ,得到下表数据： 分析这些数据,错误的是 ( ) A .上表所示生物中,与人的亲缘关系最近的是黑猩猩 B .这种研究生物进化的方法是比较 C .由于人和这六种生物都存在细胞色素C ,所以他们之间存在亲缘关系 D .细胞色素C 是一种蛋白质,其上储存有遗传信息 6.关于制作人体口腔上皮细胞临时装片的描述,错误的是 ( ) A .刮取口腔上皮细胞时先用凉开水漱口 B .体积分数为2%～3%的蓝墨水可用来染色 C .稀碘液可用来染色 D .滴加在载玻片上的液体是清水 7.下列有关基因、DNA 、染色体的叙述正确的是 ( ) A .只有生殖细胞含有性染色体 B .DNA 的每个片段都是基因 C .染色体可以被碱性染料染成深色 D .细胞内的DNA 都在染色体上 8.常用来培育无毒植株的方式是 ( ) A .扦插 B .嫁接 C .植物组织培养 D .杂交 9.在一个相对封闭的生态系统中,若只有草→兔→狐一条食物链,假如把狐全部杀灭,下图中可以正确表示兔数量变化趋势的曲线是 ( ) A B C D 10.能卷舌和不能卷舌是一对相对性状(显性基因用A 、隐性基因用a 表示),现有一对能卷舌的夫妇生的第一个孩子是不能卷舌的,下列推断正确的是 ( ) A .能卷舌是隐性性状 B .这对夫妇再生一个孩子一定是能卷舌的 C .这对夫妇的基因组成一定都是Aa D .若第一个孩子是男孩,再生一个孩子一定是女孩 11.下列关于免疫的叙述不正确的是 ( ) A .特异性免疫是人生来就有的免疫功能 B .抗体都是蛋白质 C .相同的抗原再次进入人体后,激发机体分泌抗体的速度快且量多 D .溶菌酶具有抗菌、消炎和抗病毒等作用 12.如图是从O 点开始使用青霉素后细菌数量的变化曲线。下列说法不正确的是( ) A .具有抵抗青霉素特性的细菌数量在C 点远多于A 点 B .抵抗青霉素的特性属于有利变异 C .使用青霉素促使细菌产生了抵抗青霉素特性的变异 D .曲线A →C 的变化过程是青霉素对各种类型细菌选择的结果 ------- 在-------------------- 此-------------------- 卷 -------------------- 上 -------------------- 答 --------------------题 -------------------- 无-------------------- 效 ------------ 毕业学校_____________ 姓名_____________ 准考证号_____________ ____________________________________________________
河北衡水2018-2019学年高三年级第三次质检考试 英语试题 本试卷分为第I卷（选择题）和第II卷（非选择题）两部分。共10页。考试结束后，本试卷自己留存，只交答题卡。 第一部分听力(共两节，满分30分) 第一节(共5小题：每小题1.5分，满分7.5分) 听下面5段对话。每段对话后有一个小题，从题中所给的A. B.C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 例:How much is the shirt? A.￡19.15. B.￡9.18. C.￡9.15. 答案是C。 1. What does the man want to do? A. Take photos. B. Buy a camera. C. Help the woman. 2. What are the speakers talking about? A. A noisy night. B. Their life in town. C. A place of living. 3. Where is the man now? A. On his way. B. In a restaurant. C. At home. 4. What will Celia do? A. Find a player. B. Watch a game. C. Play basketball. 5. What day is it when the conversation takes place? A. Saturday. B. Sunday. C. Monday. 第二节（共15小题：每小题1.5分，满分22.5分） 听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。 听第6段材料，回答6、7题。 6. What is Sarah going to do? A. Buy John a gift. B. Give John a surprise. C. Invite John to France. 7. What does the man think of Sarah’s plan? A. Funny. B. Exciting. C. Strange. 听第7段材料，回答第8、9题。 8. Why does Diana say sorry to Peter? A. She has to give up her travel plan. B. She wants to visit another city. C. She needs to put off her test. 9. What does Diana want Peter to do? A. Help her with her study. B. Take a book to her friend. C. Teach a geography lesson. 听第8段材料，回答第10至12题。 10. Why does the man call the woman? A. To tell her about her new job. B. To ask about her job program. C. To plan a meeting with her. 11. Who needs a new flat? A. Alex. B. Andrea. C. Miranda. 12. Where is the woman now?
2018届陕西省榆林市高考第四次模拟 英语试题 第一部分听力(共两节, 满分30分) 做题时, 先将答案标在试卷上。录音内容结束后, 你将有两分钟的时间将试卷上的答案转涂到答题卡上。 第一节(共5小题;每小题1. 5 分, 满分7. 5 分) 听下面5 段对话。每段对话后有一个小题, 从题中所给的A、B、C 三个选项中选出最佳选项。听完每段对话后，你都有10 秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 例：How much is the shirt? A. ￡19.5. B. ￡ 9.18. C. ￡ 9.15. 答案是C。 1.How does the woman's daughter go to work? A. On foot. B. By bike. C. By subway. 2. What does the woman think of her trip last Saturday? A. Boring. B.Interesting. C. Common. 3. Why did the man fail to get in touch with the woman last night? A. The man had dialed a wrong number, B. The woman's mobile phone had been stolen, C. The woman hadn't brought her mobile phone with her. 4. Why is the woman's apartment so clean? A. Because of her long leaving. B. Because of her living in the lab. C. Because of her roommate's cleaning. 5. What is the woman's problem? A. She feels headache. B. She feels frightened. C. She feels much stressed.
广东省汕头市2021届高三物理一模考试试题(含解析） １.中国自主研发的世界首座具有第四代核电特征的核电站一华能石岛湾髙温气冷堆核电站。位于山东省威海市荣成石岛湾。目前核电站使用的核燃料基本都是浓缩铀,有一种典型的轴核裂变方程是235 144 89925636U+x Ba+Kr+3x 。下列关于ｘ的说法正确是（ ） A. x 是α粒子，具有很强的电离本领 Ｂ。 x 是α粒子，穿透能力比较弱 C 。 x 是中子,中子是卢瑟福通过实验最先发现的 D. x 是中子，中子是查得烕克通过实验最先发现的 【答案】Ｄ 【解析】 【详解】AB 、根据该反应的特点可知,该核反应为重核裂变，根据核反应方程得质量数守恒和电荷数守恒可得，x 为中子,故AB 错误; C Ｄ、根据物理学史可知，卢瑟福发现了质子，预言了中子的存在，中子是查得威克通过实验最先发现的，故C 错误，Ｄ正确. ２．如图所示是汽车4５°极限爬坡时的照片，汽车缓慢逐步沿斜坡攀爬，斜坡的倾角逐渐增大至4５°。下列关于汽车这一爬坡过程的说法中正确的是 Ａ． 坡的倾角越大，汽车对坡面的压力也越大 B 。 汽车受到沿坡面向下、大小不断减小的滑动摩擦力作用
C. 汽车受到沿坡面向上、大小不断增大的静摩擦力作用 D. 若汽车能顺利爬坡．则车胎与坡间的最大静摩擦力至少为车重的大小 【答案】Ｃ 【解析】 【详解】Ａ、坡面上的汽车受到重力、斜面得支持力与摩擦力，设坡面的倾角为θ,则其中支持力：ＦN=Gcosθ,坡的倾角增大,则汽车受到的支持力减小。根据牛顿第三定律可知,坡面的倾角增大，则汽车对坡面的压力减小，故Ａ错误； BC、汽车受到的摩擦力：ｆ=Ｇsinθ，方向沿斜面向上;当θ增大时,汽车受到的摩擦力增大，故B错误，C正确； Ｄ、要使汽车不打滑，则有：μmgｃosθ≥mgsinθ,解得:μ≥ｔanθ，由于μ<1，则θ=45°时静摩擦力达到最大;可知若汽车能顺利爬坡，则车胎与坡间的最大静摩擦力至少为车重的 倍，故Ｄ错误 3。如图所示为远距离输电的原理图。发电厂输出的电压恒定，升压、降压变压器均为理想变压器.由于用户负载的变化会造成其得到的电压变化,供电部门要实时监控.监控电表为理想电表。若某次监侧发现V2表的示数减小。则下列判断正确的是 A。 电流表A１的示数增大 B. 电流表A２的示数减少 C。电压表V1的示数增大
2021年高三四模英语试题含答案 第一部分：听力（共两节，满分30分） 第一节（共5小题；每小题1.5分，满分7.5分） 1.What does the woman mean ? A, Putting off the meeting. B. Holding the meeting on time. C. Cancelling the meeting. 2.Who didn’t go to the exhibition? A. The woman speaker. B. The speakers’ cla ssmates. C. The man speaker. 3.What is the woman doing now? A. Listening to the radio. B. Turning down the radio C. Writing an application. 4.What time should the woman meet Judy? A. At 8:00. B. At 7:20. C. At 7:30. 5.What does Lucy probably do? A. A typist. B. A teacher. C. An engineer. 第二节（共15小题；每小题1．5分，满分22．5分） 听第6段材料，回答第6至8题。 6.What will the man do this evening? A. See some friends off. B. Visit the woman. C. Have dinner with his friends. 7.What’s wrong with the woman? A. She’s got a headache. B. She’s taken too many aspirins. C. She didn’t sleep well last night. 8.What will the woman probably do this evening? A. See a doctor. B. See her sister. C. Do some washing.